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(A) Liver and gastrointestinal system from spiny butterfly ray. Inset: Detail of the colon, once opened, with moderate hemorrhage (*). (B) Microscopic view of the liver parenchyma showing concentric smooth muscle fibers in the liver capsule (arrow). Inset: magnification of the liver showing a low amount of intracellular lipid drops in the hepatocytes and abundant accumulation of pigments. Scale bar = 5 cm.
